Sharpening device for lawn-mowers.



No. 673,355. Patented Apr. 30, I901.

H. J. BARTON.

SHABPENING DEVICE FOB [AWN MOWERS.

(App 'catbn filed Sept. 8, 1900) NITED STATES- PATENT OFFICE.

SHARPENING DEVICE FOR LAWN-MOWERS.

SPECIFICATION formingpart of Letters Patent No. 673,355, dated April 30,1901. Application filed September 8,1900. Serial No. 29,382. tNo model.)

To CLZZ whom it may concern/.-

Be it known that I, HARVEY J. BARTON, a citizen of the United States,residing in the city and county of Philadelphia,State of Pennsylvania,have invented a new and useful Improvement in Sharpening Devices forLawn- Mowers, of which the following is a specification.

My invention relates to a sharpener for lawn-mowers; and it consists ofa novel construction of a sharpening device whereby it can beexpeditiously attached to and disconnected from lawn -mowers, and therotary knives can be quickly sharpened by revolving them in a directionopposite to that in which they run when cutting, and thus the properedge of the knife is presented to the sharpener and the entire length ofthe knife is sharpened.

It also consists of a novel construction of a spring-clip adapted to beattached to the sharpening device or emery-bar, whereby the desiredresiliency for the emery-bar is attained.

It further consists of novel details of construction, all as will behereinafter fully set forth, and particularly pointed out in the claims.

Figure 1 represents a front elevation of a sharpening device for alawn-mower embodying my invention. Fig. 2 represents a perspective viewof one of the spring-clips employed in detached position. Fig. 3represents a transverse sectional view showing a bar of the lawn-mowerwith the stationary cutting-blade attached thereto, said bar supportingmy novel sharpening device and showing the relative position thereofwith respect to the rotary cutter.

Similar letters of reference indicate corresponding parts in thefigures.

Referring to the drawings, A designates a sharpening device forlawn-mowers, the same consisting of a bar of wood or other suitablematerial B, having emery or other suitable grinding material C on onesurface thereof, the opposite surface of said strip having attachedthereto the member D of the springclip E by suitable fastening devicesF. The member D is attached to or is integral with the body portion G ofsaid clip E and extends at an angle thereto, as will be understood fromFigs. 2 and 3, said portion having the fingers H projecting therefrom,which are adapted to engage the upper portion J of the cutter-bar K,upon which the lower or stationary blade or cutter L is carried. Theportion of the clip is provided at its lower extremity with the catchesM, the same consisting of the laterally-extending arms and the deflectedportions N, which are adapted to be seated in the recess P, whichordinarily exists between the edge of the blade L and the cutter-bar K,as will be understood from Fig. 3.

Q designates a portion of the rotary cutter of the lawnmower, whichlatter is of the usual construction, and I have not, therefore, deemedit necessary to illustrate the same in detail, as said lawn-mower, per86, forms no part of the present invention.

The operation is as follows: When it is desired to sharpen the rotarycutter Q, the sharpening-bar B is placed in the, position seen in Fig.3, the fingers H engaging the portion-J of the bar K, while thedeflected portion N engages the recess P, it being seen that the saidbar is supported upon the springclips E, so that it can yield accordingto requirements as the cutter Q is revolved. The sharpening devicehaving been placed in position, the lawn-mower is operated so that therotary cutter or knives Q revolve in a directionopposite to that inwhich they run when the machine is cutting, as indicated by the arrow onin Fig. 3, so that the proper edge of the knife is presented to the barand the entire length of the knife is sharpened,

It will be apparent from the foregoing that the sharpening device can bereadily attached to or disconnected from alawn-mower of usualconstruction, and that a simple and efiective appliance has been devisedfor the purpose intended which can be cheaply manufactured and is notliable to get out of order.

It will be apparent that changes may be made by those skilled in the artwhich will come within the scope of my invention, and I do not,therefore, desire to be limited in every instance to the exactconstruction herein shown and described.

Having thus described myinvention, what I claim as new, and desire tosecure by Letters Patent, is

1. As a new article of manufacture, asharpening device for lawn-mowers,consisting of an emery-bar and spring-clips attached to said bar, saidclips being provided with fingers adapted to engage a suitable portionof the lawn-mower.

2. As an improved article of manufacture, a sharpening device forlawn-mowers, consisting of an emery-bar having spring-clips attachedthereto, said clips consisting of a body portion, a resilient memberprojecting therefrom at an angle and adapted to sustain said emery-bar,fingers projecting from said body portion and adapted to engage a bar ofthe lawn-mower, said body portion having HARVEY J. BARTON.

Witnesses:

WM. OANER WIEDERSHEIM, JOHN A. WIEDERSHEIM.

